.ztree li span.button.diy01_ico_open{
	background: url(../images/dept_open.png) 0 0 no-repeat;
}
.ztree li span.button.diy01_ico_close{
	background: url(../images/dept_close.png) 0 0 no-repeat;
}
.ztree li span.button.diy02_ico_docu{
	background: url(../images/person.png) 0 0 no-repeat;
}
.ztree li span.button.diy03_ico_docu{
	background: url(../images/dept.png) 0 0 no-repeat;
}